Design of monitoring system and conference system on NTP VoIP platform

Whai En Chen*, Chai Hien Gan, Yi-Bing Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


This paper introduces an experiment SIP-based VoIP platform and its services. We first describe the major components of the SIP-based VoIP platform. Based on the VoIP platform, the researchers can develop and deploy their applications and services. In this platform, we develop and deploy two systems: VoIP monitoring system and conference system. The monitoring system is deployed to provide call detail records and lawful interception for the platform administrator. The conference system is deployed to provide audio and video conferences for the platform users. In this paper, we provide detailed message flows to show how the monitoring system and the conference system work.

Original languageEnglish
Pages (from-to)877-883
Number of pages7
JournalWSEAS Transactions on Communications
Issue number5
StatePublished - 1 May 2006


  • CDR (Call Detail Record)
  • LI (Lawful Interception)
  • RTP
  • SIP
  • VoIP

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